MAGETWO-83672: [Backport 2.2] MAGETWO-71697: Fix possible bug when saving address with empty street line #10582 #12130

 - Merge Pull Request #12130 from vovayatsyuk/magento2:fix-address-empty-street-array-2.2
 - Merged commits:
   1. db377d0

Author: ishakhsuvarov

app/code/Magento/Customer/Model/Address/AbstractAddress.php

@@ -269,7 +269,7 @@ public function setData($key, $value = null)
     {
         if (is_array($key)) {
             $key = $this->_implodeArrayField($key);
-        } elseif (is_array($value) && !empty($value) && $this->isAddressMultilineAttribute($key)) {
+        } elseif (is_array($value) && $this->isAddressMultilineAttribute($key)) {
             $value = $this->_implodeArrayValues($value);
         }
         return parent::setData($key, $value);
@@ -309,7 +309,11 @@ protected function _implodeArrayField(array $data)
      */
     protected function _implodeArrayValues($value)
     {
-        if (is_array($value) && count($value)) {
+        if (is_array($value)) {
+            if (!count($value)) {
+                return '';
+            }
+
             $isScalar = false;
             foreach ($value as $val) {
                 if (is_scalar($val)) {

app/code/Magento/Customer/Test/Unit/Model/Address/AbstractAddressTest.php

@@ -366,6 +366,15 @@ public function testGetStreetFullAlwaysReturnsString($expectedResult, $street)
         $this->assertEquals($expectedResult, $this->model->getStreetFull());
     }
 
+    /**
+     * @dataProvider getStreetFullDataProvider
+     */
+    public function testSetDataStreetAlwaysConvertedToString($expectedResult, $street)
+    {
+        $this->model->setData('street', $street);
+        $this->assertEquals($expectedResult, $this->model->getData('street'));
+    }
+
     /**
      * @return array
      */

app/code/Magento/Quote/Test/Unit/Model/Quote/AddressTest.php

@@ -34,6 +34,7 @@
  * Test class for sales quote address model
  *
  * @see \Magento\Quote\Model\Quote\Address
+ * @SuppressWarnings(PHPMD.TooManyFields)
  * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  */
 class AddressTest extends \PHPUnit\Framework\TestCase
@@ -48,6 +49,11 @@ class AddressTest extends \PHPUnit\Framework\TestCase
      */
     private $quote;
 
+    /**
+     * @var \Magento\Quote\Model\Quote\Address\CustomAttributeListInterface | \PHPUnit_Framework_MockObject_MockObject
+     */
+    private $attributeList;
+
     /**
      * @var \Magento\Framework\App\Config | \PHPUnit_Framework_MockObject_MockObject
      */
@@ -166,9 +172,13 @@ protected function setUp()
             ->disableOriginalConstructor()
             ->getMock();
 
+        $this->attributeList = $this->createMock(\Magento\Quote\Model\Quote\Address\CustomAttributeListInterface::class);
+        $this->attributeList->method('getAttributes')->willReturn([]);
+
         $this->address = $objectManager->getObject(
             \Magento\Quote\Model\Quote\Address::class,
             [
+                'attributeList' => $this->attributeList,
                 'scopeConfig' => $this->scopeConfig,
                 'serializer' => $this->serializer,
                 'storeManager' => $this->storeManager,